Time to go thicker

I'm almost satisfied with the shapes of the horse. But before start finishing the main subject, I need to decide the way to complete the ground behind the horse. I think I'm going thicker from here. I don't want to be dealing with too much detail of the ground and grass because they're just background. They should be less focused and help moving viewer's eyes back toward the horse, at the same time providing them comfort by providing context to the main subject. I may try some experimental way for it.